A hallmark is a mark or a series of marks struck on items made of metal, such as silver, gold or platinum. It is to certify the content of precious metals.
Under the 1973 Hallmarking Act it is a legal requirement for silver weighing over 7.78 grams, platinum over 0.5 grams and gold or palladium over 1 gram to have a recognised hallmark from one of the Assay offices based in Birmingham, Edinburgh, London or Sheffield.
A hallmark usually consists of a standard mark which is a number that shows you the type and standard of the metal the item is made of, and an Assay office mark, each office has it’s own marking, this shows which office tested and hallmarked it.
Say it with Diamonds guarantee to fully comply with the 1973 Hallmarking Act. All of our precious metal jewellery carries the legally required independent hallmark – unless exempt by weight.
Have a look at our care page for advice on the best way to take care of your special pieces.
If you want to know more about hallmarking please visit https://www.assayofficelondon.co.uk/hallmarking